The message bundle facility in JBoss Logging is generally useful. In fact, we are planning on using it as a foundation for comprehensive i18n support in Seam 3. However, developers are going to be very standoff-ish if they have to import the @Messages and @MessageBundle annotations from a logging package (org.jboss.logging). I suggest moving them to the org.jboss.i18n package, though keeping it part of the JBoss Logging project since that will remain a foundation library and to stick to 1 JAR.

Actual:
org.jboss.logging.Messages
org.jboss.logging.MessageBundle

Proposed:
org.jboss.i18n.Messages
org.jboss.i18n.MessageBundle

Relocate any other types as necessary.